Home / 74,655.09-103,128.50-51,982.74

Finding the Fourth Proportional to 74,655.09, 103,128.50 and 51,982.74

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Solution

The fourth proportional to 74,655.09, 103,128.50 and 51,982.74 is: 71,808.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,655.09 : 103,128.50 = 51,982.74 : x
  2. Step 2: Convert to fraction form
    74,655.09/103,128.50 = 51,982.74/x
  3. Step 3: Cross multiply
    74,655.09x = 103,128.50 × 51,982.74
  4. Step 4: Simplify right side
    74,655.09x = 5,360,902,132.05
  5. Step 5: Solve for x
    x = 5,360,902,132.05/74,655.09
  6. Step 6: Final answer
    x = 71,808.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.